Where small-town charm meets upscale living.

Welcome to Mountainside

Nestled among the serene Watchung Mountains of Union County lies Mountainside, where nature's beauty meets the sophistication of upscale suburban living. Here, the air is as fresh as the community vibe, and the homes range from quaint mid-century marvels to modern-day masterpieces, each with its own story and character. Every street, corner, and cul-de-sac is infused with a sense of pride and belonging.


In this small borough, life is as grand as the surrounding peaks and as intimate as the small-town festivities that light up the calendar. The harmonious blend of green spaces and the convenience of local amenities create a canvas for residents to paint their ideal lifestyles. From the gentle hum of the community pool in the summer to the crackle of autumn leaves in Echo Lake Park, Mountainside offers an idyllic setting just moments from the rush of the city.

What to Love

  • Architectural beauty in every form, from sprawling estates to cozy cottages
  • With Echo Lake Park and the Watchung Reservation, nature's playground is your backyard
  • Satisfy your taste buds at local culinary hotspots like the renowned Publick House
  • Access to a top-rated school district
  • A tight-knit community where neighbors are friends, and the welcome is as warm as the morning sun

Local Lifestyle

Mountainside living is akin to a perpetual retreat, where every day feels like a page from a lifestyle magazine. The residents here balance the leisure of country club weekends at the Mountainside Racquet Club with the simple pleasures of a stroll through their vibrant downtown. Weekends are marked by the sizzle of family barbecues, the laughter of children playing in the Mountainside Community Pool, and the peaceful trot of horses from the Watchung Stable. Life in Mountainside perfectly blends active living, family time, and luxurious tranquility.

Dining and Entertainment

Mountainside may be small, but it packs a punch when it comes to dining and entertainment. Begin your culinary journey at Publick House, a gastro-pub where the food is rivaled only by the selection of fine ales and wines. Whether it's for a casual weeknight dinner or a celebratory weekend feast, their menu is a treasure trove of comfort food with a gourmet twist.


For those special occasions when a dazzling bouquet is needed, Christoffers Flowers & Gifts is the go-to for adding a touch of elegance to any event.


Movie nights are redefined at the AMC Mountainside 10, where film buffs and casual viewers alike can enjoy the latest blockbusters with all the amenities expected of a top-tier cinema. 

Things to Do

Mountainside is a gold mine for those who love to immerse themselves in the great outdoors. The Watchung Reservation is a nature reserve that beckons hikers, bikers, and equestrians to explore its extensive network of trails. The lush canopy of trees, the chirping of birds, and the occasional deer sighting make it a nature lover's paradise.


For a blend of education and adventure, the Trailside Nature & Science Center is a family favorite, offering interactive exhibits and activities that delve into the wonders of the natural world. Here, curiosity is kindled, and the love for our planet deepens with every visit.


Mountainside is synonymous with educational excellence. The local schools here stand at the forefront of academic innovation and achievement.


  • Governor Livingston High School

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